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  1. #27
    Join Date
    Jul 2010
    Location
    clay county missouri
    Posts
    106
    every thing is getting cheaper only thing you can do is buy the best you and your customer can or will afford and hope for the best.

  2. #28
    Join Date
    May 2011
    Location
    Oklahoma
    Posts
    105
    After this summer i have concluded that a bad run cap is the best thing that ever happened to a dishonest company. Bad run cap=bad compressor. Its unfortunate but happens all the time im sure. We had a big problem with Packard brand this year (they wouldnt even swell up) and Global years ago (lost many customers). I wish they made them the same way as the old days, big and heavy!

  3. #29
    Join Date
    Oct 2011
    Location
    Chicagoland Area
    Posts
    4,754
    My motor supplier say he has seen more bad caps in the last 5 years than the 30 years prior. Blames it on China.
    Officially, Down for the count

    YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

    I know enough to know, I don't know enough
    Liberalism-Ideas so good they mandate them

  4. #30
    Join Date
    Sep 2011
    Posts
    19
    I think a lot of power is wasted because of poor capacitors. My heat pump went from drawing 21.7 amps to 14.1 with a new run cap.

  5. #31
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    19,258
    Quote Originally Posted by geo user View Post
    I think a lot of power is wasted because of poor capacitors. My heat pump went from drawing 21.7 amps to 14.1 with a new run cap.
    Let me tell you a technical secret.

    If your run cap is the wrong uf value for the motor with which it is associated, it will draw more current compared to a cap of the correct uf value. It is possible that the new cap is correct, and the old cap was either not correct, or its uf value had changed significantly.

    Unfortunately, no one has developed a replacement for PCB oil that has the same properties.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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  6. #32
    Join Date
    Sep 2011
    Posts
    19
    Explain PCB oil. The run cap was labeled right that does not mean it could have wrong printing on it.

  7. #33
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    19,258
    I wasn't talking about labelling. I think I was giving you credit for more technical understanding than you might have.

    PCB oil was discontinued in the 1970s due to hazard concerns. That said, there has been no good replacement for it.

    This is a tech to tech forum. Are you an HVAC technician?
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  8. #34
    I had high failure rates with capacitors until I changed to Genteq brand. No failures in a year.

  9. #35
    Join Date
    Aug 2008
    Location
    MD
    Posts
    40
    What kind of shelf life do modern run capacitors have?

  10. #36
    Join Date
    Sep 2011
    Posts
    19
    Yes, I am own a small heating and cooling business in Michigan.

  11. #37
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    19,258
    Quote Originally Posted by geo user View Post
    Yes, I am own a small heating and cooling business in Michigan.
    Excellent.

    Use the link at the bottom of this post top apply for Pro membership when you have 15 posts. That way, you get the most the site has to offer, and it's still free.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  12. #38
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    19,258
    Quote Originally Posted by mdmatt View Post
    What kind of shelf life do modern run capacitors have?
    Good question. I'm not sure how we could find that out without some sort of study.

    They don't hold up as long when placed in service compared to run caps from years ago, on that most of us will agree.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  13. #39
    Join Date
    Oct 2009
    Posts
    981
    I have some that were in service for 20 years and on the shelf for 5 still test fine. Modern being the key word, those spend a short time on the shelf a little longer in service and a long time in the garbage.

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